Skip to content

PrepareDeltaScan Logical Optimization

PrepareDeltaScan is a PrepareDeltaScanBase.

Creating Instance

PrepareDeltaScan takes the following to be created:

PrepareDeltaScan is created when:

  • DeltaSparkSessionExtension is requested to inject extensions (and injects pre-CBO optimizer rules)


Enable ALL logging level for logger to see what happens inside.

Add the following line to conf/

Refer to Logging.